These are some of
Worlds expensive cruises Seabourn Cruise Line 
For the Owner’s Suite on , you’ll have to shell out $2,078 per person per day. However, all fares on this classy ship include open bar and complimentary gratuities.

If you don't mind the cold, you can book a roundtrip Antarctic cruise from Ushuaia aboard the 100-passenger National Geographic Endeavour.